From: Zhang Yi <yi.z.zhang@linux.intel.com>
Date: Wed, 2 Jan 2019 05:26:24 +0000 (+0800)
Subject: hostmem: add more information in error messages
X-Git-Tag: v4.0.0-rc0~132^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=21d1683690e048663855dd6feb3034ab7c5039bc;p=thirdparty%2Fqemu.git

hostmem: add more information in error messages

When there are multiple memory backends in use, including the object type
and property name in the error message can help users to locate the error.

Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com>
Signed-off-by: Zhang Yi <yi.z.zhang@linux.intel.com>
Message-Id: <97d9193875747d8378c05b9e3b3cb39c1b7d2b4e.1546399191.git.yi.z.zhang@linux.intel.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
[ehabkost: reword commit message]
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---

diff --git a/backends/hostmem-file.c b/backends/hostmem-file.c
index 7a34e25c43c..ba601ce9408 100644
--- a/backends/hostmem-file.c
+++ b/backends/hostmem-file.c
@@ -82,7 +82,8 @@ static void set_mem_path(Object *o, const char *str, Error **errp)
     HostMemoryBackendFile *fb = MEMORY_BACKEND_FILE(o);
 
     if (host_memory_backend_mr_inited(backend)) {
-        error_setg(errp, "cannot change property value");
+        error_setg(errp, "cannot change property 'mem-path' of %s",
+                   object_get_typename(o));
         return;
     }
     g_free(fb->mem_path);
@@ -120,7 +121,8 @@ static void file_memory_backend_set_align(Object *o, Visitor *v,
     uint64_t val;
 
     if (host_memory_backend_mr_inited(backend)) {
-        error_setg(&local_err, "cannot change property value");
+        error_setg(&local_err, "cannot change property '%s' of %s",
+                   name, object_get_typename(o));
         goto out;
     }
 
diff --git a/backends/hostmem.c b/backends/hostmem.c
index 0c8ef176530..87b19d2111b 100644
--- a/backends/hostmem.c
+++ b/backends/hostmem.c
@@ -57,7 +57,8 @@ host_memory_backend_set_size(Object *obj, Visitor *v, const char *name,
     uint64_t value;
 
     if (host_memory_backend_mr_inited(backend)) {
-        error_setg(&local_err, "cannot change property value");
+        error_setg(&local_err, "cannot change property %s of %s ",
+                   name, object_get_typename(obj));
         goto out;
     }
 
@@ -66,8 +67,9 @@ host_memory_backend_set_size(Object *obj, Visitor *v, const char *name,
         goto out;
     }
     if (!value) {
-        error_setg(&local_err, "Property '%s.%s' doesn't take value '%"
-                   PRIu64 "'", object_get_typename(obj), name, value);
+        error_setg(&local_err,
+                   "property '%s' of %s doesn't take value '%" PRIu64 "'",
+                   name, object_get_typename(obj), value);
         goto out;
     }
     backend->size = value;